fix: support GPT-6 Astra model

containers/api-proxy/ai-credits-pricing.js

@@ -22,6 +22,7 @@ module.exports = Object.freeze({
   'gpt-5.6-luna':      { input: 1.00,  cachedInput: 0.10,  cacheWrite: null, output: 6.00 },
   'gpt-5.6-sol':       { input: 5.00,  cachedInput: 0.50,  cacheWrite: null, output: 30.00 },
   'gpt-5.6-terra':     { input: 2.50,  cachedInput: 0.25,  cacheWrite: null, output: 15.00 },
+  'gpt-6-astra':       { input: 10.00, cachedInput: 1.00,  cacheWrite: null, output: 50.00 },
   'claude-haiku-4-5':  { input: 1.00,  cachedInput: 0.10,  cacheWrite: 1.25, output: 5.00 },
   'claude-sonnet-4':   { input: 3.00,  cachedInput: 0.30,  cacheWrite: 3.75, output: 15.00 },
   'claude-sonnet-4-5': { input: 3.00,  cachedInput: 0.30,  cacheWrite: 3.75, output: 15.00 },

containers/api-proxy/guards/ai-credits-guard.test.js

@@ -118,6 +118,20 @@ describe('ai-credits-guard', () => {
     expect(checkUnknownModelRejection('claude-sonnet-5')).toBeNull();
   });
 
+  it('resolves gpt-6-astra from curated pricing without unknown-model rejection', () => {
+    process.env.AWF_MAX_AI_CREDITS = '10';
+    resetAiCreditsGuardForTests();
+
+    const usage = applyAiCreditsUsage({
+      input_tokens: 2000,
+      cache_read_tokens: 1000,
+      output_tokens: 100,
+    }, 'gpt-6-astra');
+
+    expect(usage.aiCreditsThisResponse).toBeCloseTo(0.7, 10);
+    expect(checkUnknownModelRejection('gpt-6-astra')).toBeNull();
+  });
+
   it('does not double-count cached tokens when input_tokens is total-inclusive (OpenAI-style)', () => {
     // OpenAI (Chat Completions and Responses API) reports prompt_tokens/input_tokens
     // as the TOTAL input, with cached tokens being a subset. When no provider is

src/copilot-model.test.ts

@@ -27,6 +27,7 @@ describe('validateCopilotModel', () => {
     'claude-fable-5',
     'claude-mythos-5',
     'claude-sonnet-5',
+    'gpt-6-astra',
     'mai-code-1-flash',
   ])('accepts newly supported Copilot allowlist models (%s)', model => {
     const result = validateCopilotModel(model);

src/copilot-model.ts

@@ -58,6 +58,7 @@ const SUPPORTED_COPILOT_MODELS = new Set([
   'gpt-5.6-luna',
   'gpt-5.6-sol',
   'gpt-5.6-terra',
+  'gpt-6-astra',
   'gpt-5-mini',
   'o3',
   'o3-mini',